<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <div id="app">
        书名:<input type="text" v-model="name"> 作者:
        <input type="text" v-model="author
        ">
        <button @click="add">提交</button>
        <h3>小黑的书架</h3>
        <ul>
            <li v-for="(item,index) in booksList" :key="item.id">
                <span>{{item.name}}</span>
                <span>{{item.author}}</span>
                <button @click="del(item.id)">删除</button>
            </li>
        </ul>
    </div>
    <script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script>
    <script>
        const app = new Vue({
            el: '#app',
            data: {
                booksList: [, {
                    id: 2,
                    name: '《西游记》',
                    author: '吴承恩'
                }, {
                    id: 3,
                    name: '《水浒传》',
                    author: '施耐庵'
                }, {
                    id: 4,
                    name: '《三国演义》',
                    author: '罗贯中'
                }],
                name: '',
                author: '',
            },
            methods: {
                add() {
                    this.booksList.push({
                        id: this.booksList.length + 1,
                        name: this.name,
                        author: this.author
                    })
                    this.name = ''
                    this.author = ''
                },
                del(x) {
                    const newArr = this.booksList.filter((ele) => {
                        return ele.id !== x


                    })
                    console.log(this.booksList)
                    this.booksList = newArr

                }

            }
        })
    </script>

</body>

</html>